| 摘要 |
A process comprises the sealing of a water soluble sheet to a water soluble member, such as a second water soluble sheet, in which a hygroscopic compound is applied to at least one of the sheet and member, before they are bought together. Also disclosed in a process consistent with the above, in which a laminate of water soluble sheets is formed. The hygroscopic compound may be such as a polyhydric alcohol, or polyol, such as a mono / di / tri hydric alcohol, such as glycerol. The process may comprise heat sealing. The sealed sheets may then be used in the manufacture of a water soluble bag or sachet. |
